1306441161 has 12 divisors (see below), whose sum is σ = 1905766980. Its totient is φ = 862336800.

The previous prime is 1306441151. The next prime is 1306441207. The reversal of 1306441161 is 1611446031.

1306441161 is a `hidden beast` number, since 1 + 3 + 0 + 644 + 1 + 16 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1281998025 + 24443136 = 35805^2 + 4944^2 .

It is not a de Polignac number, because 1306441161 - 2¹⁰ = 1306440137 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1306441141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 717706 + ... + 719523.

It is an arithmetic number, because the mean of its divisors is an integer number (158813915).

Almost surely, 2^1306441161 is an apocalyptic number.

It is an amenable number.

1306441161 is a deficient number, since it is larger than the sum of its proper divisors (599325819).

1306441161 is a wasteful number, since it uses less digits than its factorization.

1306441161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1437336 (or 1437333 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 1306441161 is about 36144.7252168280. The cubic root of 1306441161 is about 1093.1924365973.

Adding to 1306441161 its reverse (1611446031), we get a palindrome (2917887192).

The spelling of 1306441161 in words is "one billion, three hundred six million, four hundred forty-one thousand, one hundred sixty-one".